Base64 to Image Converter Online
Paste a Base64 string or full data URI and turn it back into a real image. Preview instantly, confirm the format, and download the decoded picture in your browser.
How to Convert Base64 to an Image
Open the tool and switch to Base64 to Image. Paste your string, with or without a data: prefix, and the decoded image appears at once — ready to download.
Step 1
Open Decoder
Switch to Base64 to Image and the paste area appears, ready for your encoded string.
Step 2
Paste Base64
Drop in a raw Base64 string or a full data: URI — whitespace is cleaned automatically.
Step 3
Preview & Save
Preview the decoded image, confirm its format, and download it as a real file.
Free Online Base64 to Image Converter to Decode Base64 Strings into Real Images
A Base64 to image converter is a decoder that turns an encoded text string back into a real, viewable picture. Base64 image data shows up everywhere — inside HTML data URIs, CSS background images, JSON API responses, email templates, and copied byte arrays — and a decoder lets you see what that long string actually represents. Instead of guessing, you paste the text and get the image back. For developers debugging APIs, designers checking embedded assets, and testers validating payloads, a fast, private decoder turns opaque text into something you can actually look at and download. This keeps the whole job inside one browser tab.
The most common reason to decode Base64 is API and data inspection. A REST endpoint may return an image as a Base64 field, a JSON payload may carry a thumbnail, or a CSS rule may hide a background image as a data URI. Pasting that string into a decoder reveals the picture, its true format, and its size, so you can confirm the data is correct before shipping it. Because decoding runs locally in your browser, you can inspect sensitive or production payloads without sending anything to a server — the string and the recovered image both stay on your device. The same check works for CSS background images and email attachments too.
This converter makes decoding straightforward. Paste a raw Base64 string or a full data:image/…;base64, URI and the tool immediately cleans whitespace, detects the real format from the byte signature, and renders a live preview. Formats it recognizes include PNG, JPEG, GIF, WebP, AVIF, HEIC, SVG, BMP, and ICO; browser-rendered previews appear for supported types, while others still download as a real file. When you are happy with the result, download it as an image in its original detected format. Every step happens in your browser — nothing is uploaded, stored, or shared with anyone. You can also load a sample with one click to see how decoding works.
Whether you think of it as a Base64 decoder, an image viewer for encoded data, or a string-to-image tool, the goal is the same: recover a picture from text quickly and privately. This free online converter pairs instant decoding with automatic format detection, live preview, and one-click download. Paste a string, see the image, confirm the format, and save the file — all in your browser, with no software to install and no account to create. It is the simplest way to turn Base64 image data back into a real image whenever you need it. There is nothing to configure and no sign-up required.
Decode Instantly
Paste a Base64 string and see the decoded image preview in your browser right away.
Auto Format Detect
Reads PNG, JPEG, GIF, WebP, AVIF, HEIC, SVG, BMP and ICO from the byte signature.
Accepts Data URIs
Paste a raw string or a full data:image/...;base64, URI — both work the same.
Preview First
Inspect the image and confirmed format before you download anything to your device.
Download File
Save the decoded result as a real image file in its original detected format.
Fully Private
Decoding happens entirely in your browser — no upload, no server, no account.
FAQ
Frequently Asked Questions
Base64 to image conversion decodes an encoded text string back into a viewable picture. It is the reverse of image encoding, used to preview, verify, or recover images stored or sent as text.
Open the tool, switch to Base64 to Image, and paste your string or full data URI. A live preview of the decoded picture appears at once, ready to download in your browser.
Yes. You can paste either a raw Base64 string or a full data:image/…;base64, URI. The tool handles both, strips the prefix, and detects the real format for you automatically with no extra steps.
It auto-detects PNG, JPEG, GIF, WebP, AVIF, HEIC, SVG, BMP, and ICO from the byte signature. Browser previews appear for supported types, while any other format still downloads as a real file.
No. Decoding runs entirely in your browser with JavaScript, so your string and the recovered image never leave your device. Nothing is sent to a server or stored remotely at any point.
This usually means the string is incomplete, corrupted, or holds stray characters. Copy the full Base64 value from the source, remove extra spaces, and paste it again to decode correctly.
No. Decoding simply reverses encoding, so the recovered image matches the original exactly. Quality only changes if you then export it in a lossy format like JPEG during a later step.
Yes. Copy the Base64 field from a JSON response or API payload and paste it here. The tool decodes it locally and shows the image with its format and size.
Raw Base64 is only the encoded text. A data URI adds a prefix such as data:image/png;base64, that tells the browser the exact MIME type of the image before the string.
Yes. It is completely free with no watermarks, no sign-up, and no daily limits of any kind. Decode as many strings as you need, at any time, in your browser.